How to watermark ID photo to achieve the purpose of anti-theft?

The anti-theft method of ID photo watermark is as follows:

Tools: iPhone 13 Pro, ios 16. 1, simple watermark v3.9. 1.

1. First, open the App Store of the mobile phone, enter "Simple Watermark" and download it.

2. Open it after downloading.

3. Step 2: After opening, click the+sign to insert the ID photo.

4. Click to start making, and then adjust your favorite text, watermark density, transparency and so on.

5. After adjustment. Click Generate in the upper right corner, and there will be several options to save. Select lossless saving so that you can add a watermark to the ID information.